VeccieC Hi, my Vectra has a Z22YH engine. Is it possible to do the mods (How To) on my car? I mean stuff like de-restricted airbox/remove the catalist in cat/clean throttle body etc. Thanks in advance.
BURT150 As far as i know you can de-restrict the air box and clean up the T/B and port it if you like but there isn't a pre cat on yours cus the cat is incorporated into the manifold :thumbup:
VeccieC Ok, thanks guys. If I am going to start Ill ask again. In my country there isnt much knowledge about this. I will start with the airbox then. That is save I guess? Thanks again!